Andrew beckeet



( No Model.)

A. BECKERT.

' BALANGE VALVE.

Patented Sept. 8, 1885.

JIM/e27 502 ML Mv Mc/Z/ UNITED STATES PATENT BALANC E-VALVE.

SPECIFICATION forming part of Letters Patent No. 325,649, datedSeptember 8, 1885. Application filed June 26, 1885. (No model.)

To all whom it may concern:

Be it known that 1, ANDREW BEGKERT, a citizen of the United States,residing at Baltimore, State of Maryland, have invented certain new anduseful Improvements in Balance- Valves; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates generally-to balancevalves, and particularly tothat class which is used upon locomotives. It its obvious, however, thatit can be used upon stationary or any other kind of engine having aslide-valve. The object and nature of my invention will be fullydescribed in the subjoined specification, and particularly pointed outin the claims, reference being had to the accompanying drawings, inwhich- Figure 1 represents a section of a steamchest, valve, and part ofthe cylinder, and showing the position of my improved device; Fig. 2, atop plan view of part of a valve, the part out off being similar to thatshown; Fig.

3, a section of the valve on an enlarged scale; Fig. 4, a section of thering on an enlarged scale; Fig. 5, a'plan of my preferred form of ring,and Fig. 6 a modified form of ring.

A represents the steam-chest; B, the valve, having the yoke B, stem Band the usual supply and exhaust passages, b and b,- and O a part of thecylinder, having the ports 0 and c. As all of these parts are old, anextended description of them is unnecessary. Upon .t-he upper side ofthe valve is formed a collar,

0?, having an annular recess, 0 at the bottom of which are studs 0 forretaining elliptical springs c in place, and the openings admit steam inthe recess 0 D is a ring which rests upon the springs'c The bottom ofthe ring is grooved in recess a.

c, which at d. The inner wall, d, of this groove is preferably flexibleor springy, so that the pressure of the steam in this groove will forcethe wall cl tightly against the inner wall of the recess 0 Upon theouter face of the ring is a groove, (1 which comes opposite to theopenings a, so that the steam will have free access to or action uponthe ring as soon as admitted to the chest.

The ring D may be split diametrically or tangentially, as shown in Figs.5 and 6, so that the pressure of the steam will reduce itscircumference.

In practice the ring is placed in the recess 0'' and is loosely heldagainst the top of the chest by the elliptical springs. hen steam isturned into the chest, its pressure forces the split ring upwardlyagainst the top of the chest and against the inner wall of the recess 0The wall (1 of groove (1, being more or less flexible, is forced by thepressure of the steam against the inner wall of the recess a, so that nosteam can pass between the ring and collar. The pressure of the steamupon the vertical outer face of the ring effectually closes the splitagainst the passage of steam.

That I claim as new is 1. In a balance-valve, a ring having in itsbottom a recess provided with a flexible inner wall, substantially asdescribed.

2. In a balance-valve, a split ring having in its bottom a recessprovided with a flexible inner wall, substantially as described.

3. In a balancevalve, a tangential split ring having in its bottom arecess provided with a flexible inner wall, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

ANDREXV BEGKERT.

Witnesses:

HENRY TAYLOR, MURRAY Hanson.

